def test_plugin_exists_not(plugin_name):
"""Test that a non-existing plugin returns False for exists()
Tests both for an existing module (posetta.lib.exceptions) and a non-existent module
(posetta.lib.non_existent).
"""
assert not plugins.exists("posetta.lib", plugin_name)
def exists(reader_name: str) -> bool:
"""Check whether the given reader exists
Args:
reader_name: Name of reader.
Returns:
True if reader exists, False otherwise.
"""
return plugins.exists(package_name=__name__, plugin_name=reader_name)
def test_plugin_exists():
"""Test that an existing plugin returns True for exists()"""
package_name = "posetta.readers"
plugin_name = plugins.list_all(package_name)[0]
assert plugins.exists(package_name, plugin_name)